# \#radar

**URL:** https://scanalyst.fourmilab.ch/tag/radar/375.md

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## [How ADS-B Tracks Aircraft in Flight](https://scanalyst.fourmilab.ch/t/how-ads-b-tracks-aircraft-in-flight/1456)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [31 May 2022 12:11 UTC](https://scanalyst.fourmilab.ch/t/how-ads-b-tracks-aircraft-in-flight/1456 "2022-05-31T12:11:07Z")

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Here is more about ADS-B (Automatic Dependent Surveillance–Broadcast), now installed on most large aircraft in the developed world and increasingly mandated for flight in controlled airspace. It not only p…

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## [From 1962—U.S. Army Film, “Radar and Its Applications”](https://scanalyst.fourmilab.ch/t/from-1962-u-s-army-film-radar-and-its-applications/675)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 1\
**Last updated:** [4 January 2022 23:10 UTC](https://scanalyst.fourmilab.ch/t/from-1962-u-s-army-film-radar-and-its-applications/675 "2022-01-04T23:10:37Z")

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At 34:07, we get a look at the, for the time, amazing AN/TPS-25 ground surveillance Doppler radio which could detect individual soldiers and was widely used to counter infiltration in Vietnam.

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## [Rock and Radar—The Brienz Rockfall Radar](https://scanalyst.fourmilab.ch/t/rock-and-radar-the-brienz-rockfall-radar/330)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 6\
**Last updated:** [10 November 2021 02:45 UTC](https://scanalyst.fourmilab.ch/t/rock-and-radar-the-brienz-rockfall-radar/330 "2021-11-10T02:45:00Z")

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Here is more information on the rockfall radar that protects the highway outside Brienz/Brinzauls (GR), Switzerland.